Overview
IEC 62148-2:2010 (consolidated with Amendment 1, 2024) defines the physical interface and package specifications for the SFF 10‑pin fibre optic transceiver family. It covers small form factor (SFF) duplex 10‑pin transceivers that use the MT‑RJ, LC and MU duplex optical connector interfaces (including added support for SFF‑LC and SFF‑MU). The standard is intended to ensure mechanical interchangeability at the printed‑circuit board (PCB) level and for panel‑mounting requirements. IEC 62148-2 should be read in conjunction with IEC 62148‑1 (general guidance).
Key topics and technical requirements
- Scope and classification: Defines the SFF 10‑pin transceiver family and classifies the module as Type 1 per IEC 62148‑1.
- Optical connector interfaces: Applies to MT‑RJ, LC and MU duplex receptacles; detailed receptacle dimensions and optical port assignment are provided in Clause 7 and corresponding figures.
- Electrical interface and pin assignments:
- Pin numbering is shown viewed from the top with pins underneath.
- Receiver pins (1–5): Vee (receiver ground), Vcc (receiver power), SD (signal detect), RD–, RD+.
- Transmitter pins (6–10): Vcc (transmitter power), Vee (transmitter ground), TDis (transmitter disable, optional for lasers), TD+, TD–.
- Mechanical features:
- Case outlines, PCB footprint dimensions and mounting recommendations are specified (drawings in Figures 2–5).
- Mounting studs for mechanical attachment and optional chassis grounding.
- Housing leads for additional signal/chassis grounding to improve EMC/EMI and signal integrity.
- Interchangeability: Physical dimensions and terminal assignments are specified to enable mechanical replacement and interoperability across manufacturers.
- Normative references: Linked connector standards - IEC 61754‑6 (MU), IEC 61754‑18 (MT‑RJ), IEC 61754‑20 (LC) - plus IEC 62148‑1 for guidance.
Applications and users
IEC 62148‑2 is directly useful for:
- Fibre optic transceiver manufacturers specifying SFF MT‑RJ/LC/MU 10‑pin modules
- PCB layout and mechanical design engineers implementing transceiver footprints and panel mounts
- Network equipment vendors and system integrators ensuring module interchangeability
- Compliance/test labs verifying physical and mechanical conformity
- Procurement and product teams requiring standard‑compliant optical transceiver specifications
Related standards
Keywords: IEC 62148-2, SFF 10‑pin transceivers, MT‑RJ, LC, MU, SFF-LC, SFF-MU, fibre optic transceiver, PCB footprint, pin assignments, physical interface, small form factor.